Give Me a Theme

What should I praise and write, Shall I sing a song of joy, Or to look at the days of sorrow? Appreciate the magnificent Nature, Or to talk about Nature's hollowness? Raise the name of the country, Or to think as selfish? Write on what and follow. Move on the marks marked in the past Or to make my path? Praise the creations of God, Or to curse man for its' distribution? Look at the failures and successes around, Or run fast to grab an opportunity? Single and alone, thinking and feeling, Write on what and follow. Not a single act makes me happy, my fellow. Would you please give me a subject that makes me mellow?